The Egyptian pyramids are ancient pyramid shaped masonry structures located in Egypt. There are 138 pyramids discovered in Egypt. Pyramids were made by sand, rocks and they needed sun to grow because by the sun the sand gets harder. The famous pyramid was found in Giza. The earliest known Egyptian pyramids are found at Saqqara northwest of Memphis. The estimate of the number of workers it took to build the pyramids have a wide range from a few thousand, twenty thousand, and up to 100,000. This pyramid and its surrounding complex were designed by the architect Imhotep and are generally considered to be the world's oldest monumental structures constructed of dressed masonry.